LTC4306IGN datasheet(1/20 Pages) LINER

部件名	LTC4306IGN

功能描述	4-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering

PDF	20 Pages

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制造商	LINER [Linear Technology]

网页	http://www.linear.com

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1 / 20 page

LTC4306

1

4306f

The LTC

®4306 is a 4-channel, 2-wire bus multiplexer with

bus buffers to provide capacitive isolation between the

upstream bus and downstream buses. Through software

control, the LTC4306 connects the upstream 2-wire bus to

any desired combination of downstream buses. Each

channel can be pulled up to a supply voltage ranging from

2.2V to 5.5V, independent of the LTC4306 supply voltage.

The downstream channels are also provided with

ALERT1-ALERT4 inputs for fault reporting.

Programmable timeout circuitry disconnects the down-

stream buses if the bus is stuck low. When activated, rise

time accelerators source currents into the 2-wire bus pins

to reduce rise time. Driving the ENABLE pin low restores

all features to their default states. Three address pins

provide 27 distinct addresses.

The LTC4306 is available in 24-lead QFN (4mm

× 5mm)

and SSOP packages.

■ Nested Addressing

■ 5V/3.3V Level Translator

■ Capacitance Buffer/Bus Extender

■ 1:4 2-Wire Multiplexer/Switch

■

Connect SDA and SCL Lines with 2-Wire Bus

Commands

■ Supply Independent Bidirectional Buffer for SDA

and SCL Lines Increases Fan-Out

■ Programmable Disconnect from Stuck Bus

■ Compatible with I2C and SMBus Standards

■

Rise Time Accelerator Circuitry

■ SMBus Compatible ALERT Response Protocol

■ Two General Purpose Inputs-Outputs

■

Prevents SDA and SCL Corruption During Live Board

Insertion and Removal from Backplane

■

±10kV Human Body Model ESD Ruggedness

■

24-Lead QFN (4mm

× 5mm) and SSOP Packages

4-Channel,

2-Wire Bus Multiplexer with

Capacitance Buffering

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners. Patent pending.

VCC

0.01

µF

3.3V

•

2.5V

5V

10k

LTC4306

ADDRESS = 1000 100

ADDRESS = 1111 000

SCL1

SDA1

ALERT1

SCLIN

SDAIN

ALERT

SCL4

SDA4

ALERT4

ADR2

ADR1

ADR0

GND

SFP

MODULE 1

MICRO-

CONTROLLER

10k

SFP

MODULE 4

10k

4306 TA01a

A Level Shifting and Nested Addressing Application

4306 TA01b

VCC = 3.3V

VCARD1 = 3.3V

VCARD4 = 5V

VBACK = 2.5V

SCL4

2V/DIV

500ns/DIV

SCL1

2V/DIV

SCLIN

2V/DIV

I2C Bus Waveforms

类似零件编号 - LTC4306IGN

制造商	部件名	数据表	功能描述
Linear Technology	LTC4306	201Kb / 20P	Pin-Selectable, 2-Channel, 2-Wire Multiplexer with Bus Buffers
	LTC4306	294Kb / 20P	2-Wire Bus Buffers with High Noise Margin
	LTC4306	208Kb / 20P	Pin-Selectable, 4-Channel, 2-Wire Multiplexer with Bus Buffers
	LTC4306	281Kb / 20P	2-Wire Bus Buffer with High Noise Margin
	LTC4306	228Kb / 16P	Dual I2C/SMBus Address Translator

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类似说明 - LTC4306IGN

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Linear Technology	LTC4314	208Kb / 20P	Pin-Selectable, 4-Channel, 2-Wire Multiplexer with Bus Buffers